It makes your payment zero and makes the bill active again. Try it and don’t save and close, click revert to put it back.

Resolution for 'bill active again issue: 'When I view a bill payment I see a “clear payment” button. What does That do?' available: Yes.

The bill active again issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the bill active again issue yourself by looking for a resolution described in the article. If it is a complex bill active again issue or you are unable to solve the issue, you may contact us by clicking here or by using other bill active again support options.

For more information about resolving issues related to bill active again in Quickbooks/QBO or to get support for the issue 'When I view a bill payment I see a “clear payment” button. What does That do?', click the link below: